Patents by Inventor Frédéric Mesnard

Frédéric Mesnard has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of correcting reflectivity measurements by isotherm detection and radar implementing the method
    Patent number: 8659468
    Abstract: A method of correcting the reflectivity measurements performed by a radar such as a weather radar, a reflectivity measurement being associated with a resolution volume includes analyzing the current resolution volume to determine whether the plane representing the 0° C. isotherm passes through it. When the plane representing the 0° C. isotherm passes through the current resolution volume, the volume is split into two parts lying on either side of said plane, the attenuation associated with the resolution volume is determined by taking into account the contribution of each of the parts to the measured reflectivity. The reflectivity associated with the current resolution volume is corrected using the attenuation thus determined. An onboard weather radar implements the method.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: February 25, 2014
    Assignee: Thales
    Inventors: Olivier Pujol, Clémentine Costes, Jean-Paul Artis, Frédéric Mesnard, Henri Sauvageot, Alia Iassamen
  • Method of correcting reflectivity measurements and radar implementing this method
    Patent number: 8502727
    Abstract: A method of correcting reflectivity measurements performed by a radar, such as a weather radar, includes a reflectivity measurement being associated with a resolution volume. The method includes acquiring the reflectivity measurement Zm corresponding to the current resolution volume, estimating the attenuation kc introduced by the cloud droplets, said estimating being carried out by using an average vertical profile of the cloud liquid water content, estimating the attenuation kg,O2 introduced by dioxygen, estimating the attenuation kg,H2O introduced by the water vapor, determining the total specific attenuation k of the non-detectable components taking into account the attenuation kc, the attenuation kg,O2 and the attenuation kg,H2O estimated in the preceding steps, and correcting the measured reflectivity taking into account the estimated total specific attenuation k. The method may be implemented by an onboard weather radar.
    Type: Grant
    Filed: May 28, 2011
    Date of Patent: August 6, 2013
    Assignee: THALES
    Inventors: Olivier Pujol, Clémentine Costes, Jean-Paul Artis, Frédéric Mesnard, Henri Sauvageot, Alia Iassamen
  • METHOD OF CORRECTING REFLECTIVITY MEASUREMENTS BY ISOTHERM DETECTION AND RADAR IMPLEMENTING THE METHOD
    Publication number: 20120139779
    Abstract: A method of correcting the reflectivity measurements performed by a radar such as a weather radar, a reflectivity measurement being associated with a resolution volume includes analyzing the current resolution volume to determine whether the plane representing the 0° C. isotherm passes through it. When the plane representing the 0° C. isotherm passes through the current resolution volume, the volume is split into two parts lying on either side of said plane, the attenuation associated with the resolution volume is determined by taking into account the contribution of each of the parts to the measured reflectivity. The reflectivity associated with the current resolution volume is corrected using the attenuation thus determined. An onboard weather radar implements the method.
    Type: Application
    Filed: May 31, 2011
    Publication date: June 7, 2012
    Applicant: THALES
    Inventors: Olivier PUJOL, Clémentine COSTES, Jean-Paul ARTIS, Frédéric MESNARD, Henri SAUVAGEOT, Alia IASSAMEN
  • METHOD OF CORRECTING REFLECTIVITY MEASUREMENTS AND RADAR IMPLEMENTING THIS METHOD
    Publication number: 20120133551
    Abstract: A method of correcting reflectivity measurements performed by a radar, such as a weather radar, includes a reflectivity measurement being associated with a resolution volume. The method includes acquiring the reflectivity measurement Zm corresponding to the current resolution volume, estimating the attenuation kc introduced by the cloud droplets, said estimating being carried out by using an average vertical profile of the cloud liquid water content, estimating the attenuation kg,O2 introduced by dioxygen, estimating the attenuation kg,H2O introduced by the water vapor, determining the total specific attenuation k of the non-detectable components taking into account the attenuation kc, the attenuation kg,O2 and the attenuation kg,H2O estimated in the preceding steps, and correcting the measured reflectivity taking into account the estimated total specific attenuation k. The method may be implemented by an onboard weather radar.
    Type: Application
    Filed: May 28, 2011
    Publication date: May 31, 2012
    Applicant: THALES
    Inventors: Olivier PUJOL, Clémentine COSTES, Jean-Paul ARTIS, Frédéric MESNARD, Henri SAUVAGEOT, Alia IASSAMEN
  • Method of characterizing the convection intensity of a cloud, by a meteorological radar
    Patent number: 8098188
    Abstract: The present invention relates to a method of characterizing the convection intensity of a cloud by a meteorological radar.
    Type: Grant
    Filed: June 26, 2009
    Date of Patent: January 17, 2012
    Assignee: Thales
    Inventors: Clémentine Costes, Nicolas Bon, Jean-Paul Artis, Frédéric Mesnard, Olivier Pujol, Henri Sauvageot
  • Method of Characterizing the Convection Intensity of a Cloud, by a Meteorological Radar
    Publication number: 20100164786
    Abstract: The present invention relates to a method of characterizing the convection intensity of a cloud by a meteorological radar.
    Type: Application
    Filed: June 26, 2009
    Publication date: July 1, 2010
    Applicant: Thales
    Inventors: Clémentine Costes, Nicolas Bon, Jean-Paul Artis, Frédéric Mesnard, Olivier Pujol, Henri Sauvageot